LU507730B1 - A printing method based on the spatial distribution of high and low temperature dual material - Google Patents
A printing method based on the spatial distribution of high and low temperature dual material Download PDFInfo
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- LU507730B1 LU507730B1 LU507730A LU507730A LU507730B1 LU 507730 B1 LU507730 B1 LU 507730B1 LU 507730 A LU507730 A LU 507730A LU 507730 A LU507730 A LU 507730A LU 507730 B1 LU507730 B1 LU 507730B1
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- low temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Composite Materials (AREA)
- Structural Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The present invention provides a printing method based on the spatial distribution of high and low temperature dual material, wherein the spatial distribution of the continuous fibre pre-impregnated wire portion of a product is stereo wrapped by a resin or staple fibre reinforced resin wire portion through the setting of the type of filler unit, so as to achieve the uniformity of performance in the stiffness and energy absorption of the printable product; and at the same time synergistically print the high and low temperature resin materials to form a high temperature resin framework of the product. Meanwhile, the high and low temperature resin materials are printed together to form the high temperature resin framework of the product, and the low temperature resin materials in the printed product are oriented to heat treatment, thereby bridging the pores in the product, optimizing the inter-facial bonding effect, improving the continuous fibre impregnation degree, and enhancing the mechanical properties without affecting the final forming precision of the product.
Description
' LU507730
A printing method based on the spatial distribution of high and low temperature dual material
The present invention belongs to the technical field of high-end device manufacturing, and particularly relates to a printing method based on the spatial distribution of high and low temperature dual material.
With the development of continuous fibre reinforced thermoplastic resin matrix composites additive manufacturing technology in recent years, a plurality of research teams at home and abroad have launched a series of forming equipment, such as
COMBOT-1 of China's Fibertech, Mark 2 of American Markforged Company, composer A4 of Russian Anisoprint. Dual head printing devices are not rare in the market, and multi-material printing (one head for printing resin or staple fibre reinforced resin wires, and the other for printing continuous dry fibre or continuous fibre prepreg wires) has been achieved, wherein the resin or staple fibre reinforced resin wires are used for Dsupporting the structural printing, and @ covering the continuous fibre printing layer to improve the surface quality of the final part.
Characteristics of existing continuous fibre dual head printing schemes in terms of print path and material usage are as follows: (D A continuous fibre layer is obtained based on longitudinal isotropic slicing of the target part, and the continuous fibre pre-impregnated wire portion and the resin wire portion are subjected to print path planning based on a fixed in-plane distribution rule, that is rendering the print layer as a variable path arrangement object, and the continuous fibre arrangement within the continuous fibre layer is fixed, such as a sandwich structure formed by the typical stacked arrangement of continuous fibre layers and staple fibre reinforced resin layers. (2) Resin or staple fibre reinforced resin wires and continuous fibre prepreg wires
’ LU507730 use resin with close temperature characteristics, usually the same ones, for example,
PLA wires are used in conjunction with continuous carbon fibre reinforced PLA prepreg
Wires.
Academic research has shown that a continuous fibre dual head printing scheme, that is resin or staple fibre reinforced resin wires are composited with continuous fibre prepreg wires, provides adjustable stiffness and better energy absorption properties compared to single fibre composite wires printed parts, with the addition of resin or staple fibre reinforced resin wires. Meanwhile, new pore defects are also introduced, leading to degradation of the inter-layer shear properties. For this reason, heat treatment is commonly used in the industry in the expectation of bridging the pores of the fabricated part to improve the inter-facial bonding state and reduce the adverse effects of the addition of resin or staple fibre reinforced wires.
Forming limitations limited by the characteristics of the print path and material used in the existing continuous fibre dual head printing scheme described above are as follows:
D In the print path, itis more difficult to achieve a spatial distribution of continuous fibre impregnated wires stereo wrapped by resin or staple reinforced resin wires, that 1s to say, it is not convenient to distribute continuous fibre impregnated wires and resin or staple reinforced resin wires evenly over the longitudinal cut of the product, thereby making it difficult to give full play to the beneficial effects of the staple reinforced resin portion of the stiffness adjusting and energy absorbing properties of the shaped product. @ In the process of heat treatment, considering the temperature of the resin matrix will lead to thermal deformation of the product and reduce the overall precision of the product, the temperature of heat treatment is low, so the effect of pore bridging is not as expected.
To solve the above problems, the present invention discloses a printing method based on the spatial distribution of high and low temperature dual material, aiming to provide a spatial path generation scheme for continuous fibre dual head printing, so as to achieve
’ LU507730 the formation of a part in the form of a continuous fibre pre-impregnated wire material that is stereo wrapped by resin or staple fibre reinforced resin wire material in the form of a spatially-distributed spatial distribution. Based on this, by using high temperature resin or staple fibre reinforced high temperature resin filament and a continuous fibre pre-impregnated low temperature resin wires for coordinated printing, the effect of heat treatment is improved and the performance of the part is strengthened without affecting the overall precision of the product through directional heat treatment of the low temperature resin.
To achieve the above purposes, the present invention provides the following solutions:
A printing method based on high and low temperature dual material spatial distribution includes a continuous fibre dual head printing spatial path generation scheme as:
Step 1: Set the print width w, print layer thickness f, print wall thickness /, and fill cell type;
Step 2: Horizontal slicing of the target part with the print layer thickness f, extracting the contour shape information set {Ci} for each layer, and the inner shrinking wall thickness / for each layer contour, obtaining the infill domain information set {Ri} corresponding to each layer, splitting the infill domains {Ri} for each layer with the width w, and finally slicing each sliced layer uniformly into the geometric set {Mi} consisting of a gyratory wall and a plurality of rectangular infill strips, wherein the set of all the rectangular infill strips of each layer is composed of infill body {Si};
Step 3: Fill body {Si} with the selected cell type in top to bottom, left to right order;
Step 4: The centre line of each geometry in the extracted geometry set {Mi} is a section of print paths, and the print paths are connected in the following order: single layer is linked from the outer wall path to the infill domain path, wherein the infill domain path is connected in the order from left to right, and single layer print paths are connected in the order from the bottom to the top to form the overall print path of the target product;
* LU507730
Step 5: The outer wall path is marked as resin or short fiber reinforced resin material; the resin or short fiber reinforced resin filament material and continuous fiber prepreg filament material portion of the unit cell in step 3 are marked to the respective print path; the path corresponding to the portion of the unit cell that cannot be filled with filler body {Si} in step 3 is marked as resin or short fiber reinforced resin material; so far completing the marking of all the materials of the print paths, that is completing the print head marking corresponding to the print paths of each section.
Further, the above described resin or staple fibre reinforced resin material is a high temperature resin, and the resin matrix of the continuous fibre prepreg filament material is a low temperature resin, and the thermal decomposition temperature of the low temperature resin shall be higher than the melting point of the high temperature resin.
The selection of the above materials makes it possible to construct an overall framework of the product consisting of a high temperature resin and uniformly cover the continuous fibre pre-impregnated wire material, and to carry out directional heat treatment of the low-temperature resin of the continuous-fibre pre-impregnated wire material in the post- treatment process, so that the pores in the product can be bridged and the degree of continuous fibre impregnation can be enhanced without affecting the precision of the final shaping of the product.
Further, the filling unit cell set out in the continuous fibre dual head printing space path generation scheme consists of a rectangular structure comprising rectangular filling strips as described in step 2, each rectangular filling strip being marked with a corresponding material, and three design structures of the unit cells are existed based on the difference in the distribution of the resin or staple fibre reinforced resin wires and the continuous fibre prepreg wires:
D A 3x3 unit cell
The first layer: low temperature, high temperature, low temperature,
The second layer: high temperature, low temperature, high temperature,
The third layer : low temperature, high temperature, low temperature.
The corresponding spatial distribution of high/low temperature materials in the unit
’ LU507730 cell is 4:5; @ A 4x4 unit cell
The first layer: low temperature, high temperature, high temperature, low temperature,
The second layer: high temperature, low temperature, low temperature, high temperature,
The third layer: high temperature, low temperature, low temperature, high temperature,
The forth layer: low temperature, high temperature, high temperature, low temperature.
The corresponding spatial distribution of high/low temperature materials in the unit cell is 5:5; © A 5x5 unit cell
The first layer: low temperature, high temperature, high temperature, high temperature, low temperature,
The second layer: high temperature, low temperature, low temperature, low temperature, high temperature,
The third layer: high temperature. low temperature, high temperature, low temperature, high temperature,
The forth layer: high temperature, low temperature, low temperature, low temperature, high temperature,
The fifth layer: low temperature, high temperature, high temperature, high temperature, low temperature.
The corresponding spatial distribution of high/low temperature materials in the unit cell is 13:12;
The above described three design structures of the unit cells all achieve a spatial distribution of the continuous fibre pre-impregnated wire portion of the part being spatially wrapped by the resin or staple fibre reinforced resin wire portion in a stereo uniform manner, that is a spatial distribution of the high/low temperature material is 50%,
° LU507730 but with a reduced suitability for the shape and size of the product in order.
Further, after completing the printing, the heat treatment temperature range of the sample 1s set between a low temperature resin melting point and a high temperature resin melting point, and the heating time is determined according to the size of the formed sample, and the heating time is at least 3 hours.
Beneficial effects of the present invention are as follows: (1) The present invention provides a continuous fibre dual head printing spatial path generation scheme, in which a continuous fibre pre-impregnated wire portion of a product is spatially distributed to be stereo wrapped by a resin or staple fibre reinforced resin wire portion by the setting of a type of filling unit cell, so as to achieve a uniformity in the performance of stiffness, and energy absorption in the printed product; (2) Based on the provided continuous fibre dual head printing spatial path generation scheme, high and low temperature resin materials are coordinately printed to form a high temperature resin framework of the product, and by directional heat treatment of the low temperature resin material in the printed part, it is possible to achieve the bridging of pores in the part, optimize the interface bonding effect, improve the degree of impregnation of the continuous fibre, and improve the mechanical properties, without affecting the final shaping precision of the product.
FIG. 1 is a schematic diagram of the three design structures unit cells involved in the continuous fibre dual head print space path generation scheme of the present invention: (a) a 3x3 unit cell, (b) a 4 x 4 unit cell, and (c) a 5 x 5 unit cell.
FIG. 2 is a schematic diagram of the geometric slicing of a slice in step 2 of the continuous fibre dual head print space path generation scheme of the present invention.
FIG. 3 is a schematic diagram of the infill body {Si} in step 2 of the continuous fibre dual head print space path generation scheme of the present invention.
FIG. 4 is a schematic diagram of step 4 of the continuous fibre dual head print space path generation scheme of the present invention.
’ LU507730
FIG. 5 is a schematic diagram of step 5 of the continuous fibre dual head print space path generation scheme of the present invention.
The present invention is further illustrated below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are merely used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the terms “front”, “rear”, “left”, “right”, “upper”, and “lower” used in the following description refer to directions in the drawings, and the words “inner” and “outer” respectively refer to directions toward or away from geometric centers of particular components.
The target product is a 9x5%2.25 mm cube, and the high temperature material used is a short carbon fibre reinforced PA66 (nylon 66) composite wires, and low temperature material used is a continuous carbon fibre reinforced HIPS (impact-grade polystyrene) pre-impregnated wires.
The embodiment uses a continuous fibre dual head spatial path generation scheme as follows:
Step 1: Set the print width w to 1mm, print layer thickness 7 to 0.25mm, print wall thickness / to Imm, and select a 3x3 unit cell for the infill cell type, as shown in FIG. l(a);
Step 2: The target part is horizontally sliced with the print layer thickness 7 of 0.25mm, the contour shape information set {C7} is extracted from each layer, the wall thickness / of each layer is 1mm, the infill domain information set {Ri} corresponding to each layer is obtained, and the infill domains of each layer {Ri} are divided with the width w of 1mm, and finally the sliced layers are uniformly sliced into the geometrical set {Mi} consisting of the gyratory wall and a plurality of rectangular infill bars, wherein all rectangular infill bars of each layer are the infill body {S7}, as shown in FIG. 2 and FIG. 3;
Step 3: Fill body {Si} with the selected cell type in top to bottom, left to right order;
° LU507730
Step 4: The centre line of each geometry in the extracted geometry set {Mi} is a section of the print path, and the print path connection order is as follows: the single layer is linked to the infill domain path by the outer wall path, wherein the infill domain path is connected in order from left to right, and the single layer print path is connected in order from the bottom to the top to form the overall print path of the target product, as shown in FIG. 4;
Step 5: The outer wall path is marked as short carbon fiber reinforced HIPS (impact- resistant polystyrene) material; the short carbon fiber reinforced PA66 (nylon 66) part and the continuous carbon fiber reinforced HIPS (impact-resistant polystyrene) prepreg filament part of the unit in step 3 are marked in their respective print paths; the paths corresponding to the part of the unit that is not able to be filled with the filler {Si} in step 3 are marked as short carbon fiber reinforced PA66 (nylon 66) material; so far all the print path materials are marked, that is, the print head marking corresponding to each section of the print path is completed, as shown in FIG. 5.
After printing according to the above printing scheme, heat treatment is carried out on the product, with the parameters set at a heating temperature of 210°C and a heating time of 3 hours.
The technical means disclosed by the technical solutions of the present invention are not limited to these disclosed in the above implementations and further include the technical solutions formed by any combination of the above technical features.
Claims (4)
1. A printing method based on high and low temperature dual material spatial distribution includes a continuous fibre dual head printing spatial path generation scheme as:wherein Step 1: Set the print width w, print layer thicknessf, print wall thickness /, and fill cell type; Step 2: Horizontal slicing of the target part with the print layer thickness 7, extracting the contour shape information set {C7} for each layer, and the inner shrinking wall thickness / for each layer contour, obtaining the infill domain information set {Ri} corresponding to each layer, splitting the infill domains {Ri} for each layer with the width w, and finally slicing each sliced layer uniformly into the geometric set {Mi} consisting of a gyratory wall and a plurality of rectangular infill strips, wherein the set of all the rectangular infill strips of each layer is composed of infill body {57}; Step 3: Fill body {Si} with the selected cell type in top to bottom, left to right order; Step 4: The centre line of each geometry in the extracted geometry set {Mi} is a section of print paths, and the print paths are connected in the following order: single layer is linked from the outer wall path to the infill domain path, wherein the infill domain path is connected in the order from left to right, and single layer print paths are connected in the order from the bottom to the top to form the overall print path of the target product; Step 5:The outer wall path is marked as resin or short fiber reinforced resin material; the resin or short fiber reinforced resin filament material and continuous fiber prepreg filament material portion of the unit cell in step 3 are marked to the respective print path; the path corresponding to the portion of the unit cell that cannot be filled with filler body {Si} in step 3 is marked as resin or short fiber reinforced resin material; so far completing the marking of all the materials of the print paths, that is completing the print head marking corresponding to the print paths of each section.
2. A printing method based on high and low temperature dual material spatial distribution according to claim 1,wherein: the above described resin or staple fibre reinforced resin material is a high temperature resin, and the resin matrix of the continuous fibre prepreg filament material is a low temperature resin, and the thermal decomposition temperature of the low temperature resin shall be higher than the melting point of the high temperature resin. The selection of the above materials makes it possible to construct an overall framework of the product consisting of a hightemperature resin and uniformly cover the continuousfibre pre-impregnated wire material, and to carry out directional heat treatment of the low-temperature resin of the continuous-fibre pre-impregnated wire material in the post-treatment process, so that the pores in the product can be bridged and the degree of continuousfibre impregnation can be enhanced without affecting the precision of the final shaping of the product.
3. A printing method based on high and low temperature dual material spatial distribution according to claim 1,wherein: the filling unit cell set out in the continuous fibre dual head printing space path generation scheme consists of a rectangular structure comprising rectangular filling strips as described in step 2, each rectangular filling strip being marked with a corresponding material, and three design structures of the unit cells are existed based on the difference in the distribution of the resin or staple fibre reinforced resin wires and the continuous fibre prepreg wires: D A 3x3 unit cell The first layer: low temperature, high temperature, low temperature, The second layer: high temperature, low temperature, high temperature, The third layer : low temperature, high temperature, low temperature. The corresponding spatial distribution of high/low temperature materials in the unit cell is 4:5; @ A 4x4 unit cell The first layer: low temperature, high temperature, high temperature, low temperature, The second layer: high temperature, low temperature, low temperature, high temperature, The third layer: high temperature, low temperature, low temperature, high temperature,
The forth layer: low temperature, high temperature, high temperature, low temperature. The corresponding spatial distribution of high/low temperature materials in the unit cell is 5:5; @ A 5xS5 unit cell The first layer: low temperature, high temperature, high temperature, high temperature, low temperature, The second layer: high temperature, low temperature, low temperature, low temperature, high temperature, The third layer: high temperature. low temperature, high temperature, low temperature, high temperature, The forth layer: high temperature, low temperature, low temperature, low temperature, high temperature, The fifth layer: low temperature, high temperature, high temperature, high temperature, low temperature. The corresponding spatial distribution of high/low temperature materials in the unit cell is 13:12; The above described three design structures of the unit cells all achieve a spatial distribution of the continuous fibre pre-impregnated wire portion of the part being spatially wrapped by the resin or staple fibre reinforced resin wire portion in a stereo uniform manner, that is a spatial distribution of the high/low temperature material is 50%, but with a reduced suitability for the shape and size of the product in order.
4. A printing method based on high and low temperature dual material spatial distribution according to claim 1,wherein: after completing the printing, the heat treatment temperature range of the sample is set between a low temperature resin melting point and a high temperature resin melting point, and the heating time is determined according to the size of the formed sample, and the heating time is at least 3 hours.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310571470.2A CN116638751B (en) | 2023-05-20 | 2023-05-20 | A printing method based on the spatial distribution of high and low temperature dual materials |
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| LU507730B1 true LU507730B1 (en) | 2024-12-05 |
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| CN (1) | CN116638751B (en) |
| LU (1) | LU507730B1 (en) |
| WO (1) | WO2024239787A1 (en) |
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| CN116638751B (en) * | 2023-05-20 | 2024-03-01 | 南京航空航天大学 | A printing method based on the spatial distribution of high and low temperature dual materials |
| CN118046575B (en) * | 2024-04-16 | 2024-06-18 | 南京航空航天大学 | Interlayer strengthening method for continuous fiber additive manufacturing based on pressure injection Z-pin structure |
| US12576581B2 (en) | 2024-04-16 | 2026-03-17 | Nanjing University Of Aeronautics And Astronautics | Interlayer strengthening method for continuous fiber additive manufacturing based on pressure injected Z-pin-like structures |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090065965A1 (en) * | 2007-09-07 | 2009-03-12 | Plasticomp, Llc | reinforced thermoplastic resin and device and method for producing very long fiber reinforced thermoplastic resins |
| US9688028B2 (en) * | 2013-03-22 | 2017-06-27 | Markforged, Inc. | Multilayer fiber reinforcement design for 3D printing |
| US9694544B2 (en) * | 2013-03-22 | 2017-07-04 | Markforged, Inc. | Methods for fiber reinforced additive manufacturing |
| US9815268B2 (en) * | 2013-03-22 | 2017-11-14 | Markforged, Inc. | Multiaxis fiber reinforcement for 3D printing |
| EP3046749B1 (en) * | 2013-09-19 | 2021-02-17 | Markforged, Inc. | Methods for fiber reinforced additive manufacturing |
| CN106573413B (en) * | 2014-05-27 | 2019-02-12 | 学校法人日本大学 | Three-dimensional printing system, three-dimensional printing method, molding device, fiber-containing object, and manufacturing method thereof |
| EP3221129B1 (en) * | 2014-11-17 | 2022-10-19 | Markforged, Inc. | Composite filament 3d printing using complementary reinforcement formations |
| CN106363905B (en) * | 2016-11-15 | 2018-11-23 | 哈尔滨工业大学 | Spray head based on ultrasonically enhanced fibre reinforced composites increasing material manufacturing |
| US20200032006A1 (en) * | 2017-02-22 | 2020-01-30 | Konica Minolta, Inc. | Powder material and method for manufacturing coated particles used in same, method for manufacturing three-dimensional shaped object using powder material, and three-dimensional shaping device |
| CN107081922B (en) * | 2017-06-06 | 2019-04-02 | 威海纳川管材有限公司 | The long defeated pipe of heavy caliber thermoplastic composite and its manufacturing method and apparatus |
| CN108189386A (en) * | 2017-12-15 | 2018-06-22 | 北京机科国创轻量化科学研究院有限公司 | A kind of fiber-reinforced resin matrix compound material three-dimensional printing-forming method |
| DE102018107795A1 (en) * | 2018-04-03 | 2019-10-10 | Volkswagen Aktiengesellschaft | A method of making a 3D printed tool, and such a 3D printed tool, and using such a 3D printed tool |
| CN108790144A (en) * | 2018-06-15 | 2018-11-13 | 天津工业大学 | A kind of interlaminar improvement technology of fibre reinforced composites 3D printing |
| DE102019202942A1 (en) * | 2019-03-05 | 2020-09-10 | Aim3D Gmbh | 3D printing device with a temperature regulation device for applied printing material |
| US11897194B2 (en) * | 2020-08-17 | 2024-02-13 | University Of Delaware | Method and system for dynamic capillary-driven additive manufacturing of continuous fiber composite |
| CN114031794B (en) * | 2021-11-05 | 2023-09-19 | 陕西斐帛科技发展有限公司 | A variable stiffness hybrid continuous fiber reinforced composite material based on 3D printing and its preparation method |
| CN114274504B (en) * | 2021-12-27 | 2023-01-24 | 南京航空航天大学 | A continuous fiber prefabricated body film laying and printing forming method |
| CN114474709B (en) * | 2021-12-28 | 2023-03-10 | 南京航空航天大学 | Printing head for additive manufacturing of fiber reinforced composite material and printing method |
| CN115256924B (en) * | 2022-07-12 | 2024-09-24 | 东华大学 | A 3D printing method for fiber composite materials with controllable fiber distribution |
| CN116638751B (en) * | 2023-05-20 | 2024-03-01 | 南京航空航天大学 | A printing method based on the spatial distribution of high and low temperature dual materials |
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- 2023-05-20 CN CN202310571470.2A patent/CN116638751B/en active Active
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2024
- 2024-03-25 LU LU507730A patent/LU507730B1/en active IP Right Grant
- 2024-03-25 WO PCT/CN2024/083443 patent/WO2024239787A1/en not_active Ceased
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| Publication number | Publication date |
|---|---|
| CN116638751A (en) | 2023-08-25 |
| WO2024239787A1 (en) | 2024-11-28 |
| CN116638751B (en) | 2024-03-01 |
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